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Development of PCB Cracking Method by Plasma Heating with Acetylene and without Dioxin Generations

Research Project

Project/Area Number 11450284
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Metal making engineering
Research InstitutionMusashi Institute of Technology

Principal Investigator

SHIMPO Ryokichi  Musashi Institute of Technology, Faculty of Engineering, Associate Professor, 工学部, 助教授 (40154398)

Co-Investigator(Kenkyū-buntansha) YOSHIDA Toyonobu  University of Tokyo, Graduate School of Engineering, Professor, 大学院・工学系研究科, 教授 (00111477)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥15,600,000 (Direct Cost: ¥15,600,000)
Fiscal Year 2000: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1999: ¥13,600,000 (Direct Cost: ¥13,600,000)
KeywordsDioxin / PCB / Acetylene / Plasma Processing / Equilibrium Calculation
Research Abstract

As a process for cracking PCB with acetylene generation, a new method using hybrid plasma heating followed by gas filter assemblies for cleaning the generated gas has been presented in this research. Equilibrium calculations were conducted for the simulation of both the reaction systems in plasma heating condition and in the heating condition performed by normal electric furnaces, the latter of which is supposing the heating of the filter for burning out the substances caught at the filter. For the equilibrium calculation, a version of GOTO methods has been employed which was developed by this researchers' group. According the results of the simulations, it became obvious that about 90% of PCB can be cracked to be acetylene heated in the temperature range from 1500℃ to 2500℃. The similar conversion ratio is prospected when kerosene is mixed to PCB as a solvent. It has also turned out that the decomposition temperature of dioxin is much dependent on the oxygen ratio in the system at the temperature range given by normal electric furnaces. In order to confirm the formation and decomposition of dioxin experimentally, chlorobenzene was heated with small amount of oxygen in the temperature range lower than 800℃ in a reaction tube of a electric furnace. When the temperature of the furnace was lower than 600℃, few substances reacted were found by the analysis using gas chromatography mass spectrometer. However, a large number of organic substances having benzene ring were found when heated at 700℃ and 800℃. A dibenzofuran, which belongs to the dioxin family and toxic, has been detected when heated with metallic copper as catalyst, though dioxin itself has not been detected yet.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (6 results)

All 2000 1999 Other

All Journal Article (4 results) Publications (2 results)

  • [Journal Article] ダイオキシン発生・分類に関する熱力学的シミュレーション2000

    • Author(s)
      真保 良吉
    • Journal Title

      表面技術環境部会研究会誌 4

      Pages: 11-20

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Journal Article] A Thermodynamic Simulation on the Generation and Decomposition of Dioxin (Japanese)2000

    • Author(s)
      Ryokichi Shimpo
    • Journal Title

      HYOUMEN-GIJYUTU KANKYOU BUKAI KENKYU KAISHI (The Surface Finishing Society of Japan) Vol.4, No.1

      Pages: 11-20

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Journal Article] Fabrication of Ni-YSZ Cermet Electrode for SOFC by Hybrid Plasma Splaying and Its Electrical Characterization1999

    • Author(s)
      R.Shimpo, Y.Uehara, T.Yoshida
    • Journal Title

      International Union of Pure and Applied Chemistry, SPC 14, Praha, Czerch

      Pages: 2115-2120

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Journal Article] Fabrication of Ni-YSZ Cermet Electrode for SOFC by Hybrid Plasma Splaying and Its Electrical Characterization1999

    • Author(s)
      R.Shimpo, Y.Uehara, T.Yoshida
    • Journal Title

      International Union of Pure and Applied Chemistry (Praha, Czerch) SPC 14

      Pages: 2115-2120

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 真保良吉: "ダイオキシン発生・分解に関する熱力学的シミュレーション"表面技術環境部会研究会誌. Vol.4,No.1. 11-20 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] R.Shimpo,Y.Uehara,T.Yoshida: "Fabrication of Ni-YSZ Cermet Electrode for SOFC by Hybrid Plasma Spraying and Its Electrical Characterization"International Union of Pure and Applied Chemistry. ISPC 14. 2115-2120 (1999)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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